Patents by Inventor Patrick J. Creegan

Patrick J. Creegan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4094111
    Abstract: An improved frame for a building formed of structural frame members of steel or other structural metal. The structural frame members are connected together by many resilient connectors, each connector including a bolt having resilient sleeve means surrounding the same. The bolt has a head at one end and a nut threadably mounted at its opposite end. The bolt and sleeve means are inserted through aligned, oversized holes in a pair of adjacent structural members and the nut is threaded on the bolt to interconnect the structural frame members yet allow one structural frame member to slide over the other member, such as during an earthquake, to permit dissipation of energy by the heat of friction. The sleeve means also absorbs some of the energy and allows the structural frame members to return to their initial relative positions after they have been displaced relative to each other. Several embodiments of the sleeve means are disclosed.
    Type: Grant
    Filed: August 18, 1976
    Date of Patent: June 13, 1978
    Inventor: Patrick J. Creegan